PROBLEM TO BE SOLVED: To save energy of a dual motor type electric forklift, and/or prevent wear of a tire.SOLUTION: A left drive wheel 610L and a right drive wheel 610R are driven by independent travel motors. A motor drive device for driving the left and right travel motors comprises a speed distribution part for controlling speed of the left and right drive wheels based on a speed command value Vref indicating target speed of the electric forklift. The speed distribution part reflects relationship of a coordinate of a steering angle δand an intersection O of extension lines of axes of the left and right steering wheels 612L, 612R, to a left speed command value Vlref and right speed command value Vrref.
【課題】デュアルモータ式の電動フォークリフトの省エネ化、および/または、タイヤの摩耗の防止にある。【解決手段】左駆動輪610Lと右駆動輪610Rは、独立した走行モータによって駆動される。左右の走行モータを駆動するモータ駆動装置は、電動フォークリフトの目標速度を示す速度指令値Vrefにもとづいて、左右の駆動輪の速度を制御する速度分配部を備える。速度分配部は、転舵角δrと、左右の転舵輪612L、612Rの軸の延長線の交点Oの座標の関係を、左速度指令値Vlrefおよび右速度指令値Vrrefに反映させる。【選択図】図6
ELECTRIC FORKLIFT AND MOTOR DRIVE DEVICE FOR TRAVELING OF IT
電動フォークリフトおよびその走行用モータ駆動装置
2015-11-02
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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